“…Our results are somewhat contrary to those reported by Tchelitscheff (14) in 1948 in winery scale fermentations, of Hickinbotham and Ryan (8) in 1948, and of Brockmann and Stier ( 4 ) in laboratory scale experiments. However, Tchelitscheff ( 1 4 ) did not use tanks of similar size in his comparative tests and in one case a closed fermenter was used and in the other an open one.…”